JPS61101483U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す回路図、第２図
は同上の動作説明図、第３図は同上の電池電圧と
昇圧出力との関係を示す特性図、第４図は従来例
を示す回路図、第５図は同上の動作説明図である
。Ｂは電池、Ｎ_１は１次巻線、Ｎ_２は２次巻線、
Ｑ_１はスイツチングトランジスタ、Ｄ_１，Ｄ_４は
ダイオード、Ｃ_１，Ｃ_２はコンデンサ、Ｄ_３はツ
エナダイオード、Ｒ_１は起動抵抗である。 Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the same operation as above, Fig. 3 is a characteristic diagram showing the relationship between battery voltage and boost output as above, and Fig. 4 is a conventional example. The circuit diagram shown in FIG. 5 is an explanatory diagram of the same operation. B is the battery, _N1 is the primary winding, _N2 is the secondary winding,
Q ₁ is a switching transistor, D ₁ and D ₄ are diodes, C ₁ and C ₂ are capacitors, D ₃ is a Zener diode, and R ₁ is a starting resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 直流電源と、該直流電源の両端にトランスの１
次巻線とスイツチングトランジスタとの直列回路
を接続し、該スイツチングトランジスタのベース
にトランスの２次巻線と発振用コンデンサとの直
列回路を接続すると共に起動抵抗を介して直流電
源を接続し、トランスの帰還作用により発振して
、直流電源電圧を昇圧するＤＣ―ＤＣコンバータ
と、トランスの２次巻線と発振用コンデンサとの
直列回路に並列に接続して該直列回路の両端電圧
を一定とする定電圧回路とから成る昇圧回路。 A DC power supply and one transformer at both ends of the DC power supply.
Connect a series circuit between the secondary winding and a switching transistor, connect a series circuit between the secondary winding of the transformer and an oscillation capacitor to the base of the switching transistor, and connect a DC power supply via a starting resistor. , a DC-DC converter that oscillates due to the feedback action of the transformer to boost the DC power supply voltage, and is connected in parallel to a series circuit consisting of the secondary winding of the transformer and the oscillation capacitor to maintain a constant voltage across the series circuit. A booster circuit consisting of a constant voltage circuit and a constant voltage circuit.